so if they get hacked you lose it and if you lose it together with the number of your EID than you are really busted
all the forms which have NO HTTPS have no certificate and no encryption at all and if they get attacked by an sql injection because they didn't check their code as their should have done, than all your data is gone inclusief the data that you will never be able to change again
you can not be prosecuted to give fake RRN numbers or EID numbers as long as the rest of the info is correct
http://belsec.skynetblogs.be/apps/search/?s=rijksregisternummer our previous actions
privacycommission, where are you ?
if you belong to these organisations you can ask them to change it in a form
https://www.mechelen.be/loket_files/605/contactformulier-vrijwilligers.html (bad certificate)
https://informatie.santander.be/BE_CONS_OFT_WEB/pages/nl/form2.jsp?sid=c0b19acb0fa71b511c0b18ae10c4886d (bad certificate)